我想展示产品形象。每个产品有4个图像。当我在ImageView中显示图像时，我就失去了记忆。
这是我的代码：
public class ImagesActivity extends Activity {
private String styleCode,styleName;
private String strExecutive;
private Uri[] mUrls;
String[] mFiles=null;
private Gallery g;
private ImageView picture;
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.image_view);
Bundle b = getIntent().getExtras();
styleCode = b.getString("styleCode");
styleName =b.getString("styleCode");
setTitle(styleName);
SharedPreferences myPrefs = this.getSharedPreferences("myLogedPrefs",MODE_PRIVATE);
strExecutive = myPrefs.getString("Executive", "");
picture = (ImageView) findViewById(R.id.picture);
Button picCancel = (Button)findViewById(R.id.picCancel);
picCancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
Intent i = new Intent();
Bundle bundle = new Bundle();
bundle.putString("Activity", "ImagesActivity");
i.putExtras(bundle);
finish();
}
});
String folderPath = Environment.getExternalStorageDirectory() + "/"+strExecutive+"/"+styleCode+"/";
File filePath = new File(folderPath);
File[] imagelist = filePath.listFiles(new FilenameFilter(){
public boolean accept(File dir, String name) {
return ((name.endsWith(".jpg"))||(name.endsWith(".png")));
}
});
mFiles = new String[imagelist.length];
for(int i= 0 ; i< imagelist.length; i++)
{
mFiles[i] = imagelist[i].getAbsolutePath();
}
mUrls = new Uri[mFiles.length];
for(int i=0; i < mFiles.length; i++)
{
mUrls[i] = Uri.parse(mFiles[i]);
}
g = (Gallery) findViewById(R.id.gallery);
g.setAdapter(new ImageAdapter(this));
g.setFadingEdgeLength(40);
g.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {
Toast.makeText(arg1.getContext()," Image is available to this style" + arg2,Toast.LENGTH_LONG).show();
getLargeImage(arg2);
}
});
}
public void getLargeImage(int position) {
Uri pickedUri =mUrls[position];
Bitmap pic = null;
String imgPath = "";
String[] medData = { MediaStore.Images.Media.DATA };
Cursor picCursor = managedQuery(pickedUri, medData, null, null, null);
if(picCursor!=null)
{
int index = picCursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
picCursor.moveToFirst();
imgPath = picCursor.getString(index);
}
else
imgPath = pickedUri.getPath();
if(pickedUri!=null) {
int targetWidth = 600;
int targetHeight = 400;
BitmapFactory.Options bmpOptions = new BitmapFactory.Options();
bmpOptions.inJustDecodeBounds = true;
BitmapFactory.decodeFile(imgPath, bmpOptions);
int currHeight = bmpOptions.outHeight;
int currWidth = bmpOptions.outWidth;
int sampleSize = 1;
if (currHeight>targetHeight || currWidth>targetWidth)
{
if (currWidth>currHeight)
sampleSize = Math.round((float)currHeight/(float)targetHeight);
else
sampleSize = Math.round((float)currWidth/(float)targetWidth);
}
bmpOptions.inSampleSize = sampleSize;
bmpOptions.inJustDecodeBounds = false;
pic = BitmapFactory.decodeFile(imgPath, bmpOptions);
Drawable toRecycle= picture.getDrawable();
if (toRecycle != null) {
((BitmapDrawable)picture.getDrawable()).getBitmap().recycle();
}
picture.setImageBitmap(pic);
picture.setScaleType(ImageView.ScaleType.FIT_CENTER);
}
}
public class ImageAdapter extends BaseAdapter{
int mGalleryItemBackground;
public ImageAdapter(Context c) {
mContext = c;
TypedArray styleAttrs = mContext.obtainStyledAttributes(R.styleable.PicGallery);
mGalleryItemBackground = styleAttrs.getResourceId(
R.styleable.PicGallery_android_galleryItemBackground, 0);
styleAttrs.recycle();
}
public int getCount(){
return mUrls.length;
}
public Object getItem(int position){
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent){
ImageView i = new ImageView(mContext);
Drawable toRecycle= i.getDrawable();
if (toRecycle != null) {
((BitmapDrawable)i.getDrawable()).getBitmap().recycle();
}
i.setImageURI(mUrls[position]);
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new Gallery.LayoutParams(260, 210));
return i;
}
private Context mContext;
}
错误说：
06-13 17:51:26.042: E/AndroidRuntime(27358): FATAL EXCEPTION: main
06-13 17:51:26.042: E/AndroidRuntime(27358): java.lang.OutOfMemoryError
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:582)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:380)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:413)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.graphics.drawable.Drawable.createFromPath(Drawable.java:880)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.ImageView.resolveUri(ImageView.java:569)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.ImageView.setImageURI(ImageView.java:340)
06-13 17:51:26.042: E/AndroidRuntime(27358): at xont.sdfd.controller.sales.ImagesActivity$ImageAdapter.getView(ImagesActivity.java:225)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:192)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4709)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1385)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.measureVertical(LinearLayout.java:670)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.onMeasure(LinearLayout.java:563)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4709)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4709)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4709)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1385)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.measureVertical(LinearLayout.java:670)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.LinearLayout.onMeasure(LinearLayout.java:563)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4709)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
06-13 17:51:26.042: E/AndroidRuntime(27358): at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2240)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.View.measure(View.java:12775)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1092)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2505)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.os.Handler.dispatchMessage(Handler.java:99)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.os.Looper.loop(Looper.java:137)
06-13 17:51:26.042: E/AndroidRuntime(27358): at android.app.ActivityThread.main(ActivityThread.java:4514)
06-13 17:51:26.042: E/AndroidRuntime(27358): at java.lang.reflect.Method.invokeNative(Native Method)
06-13 17:51:26.042: E/AndroidRuntime(27358): at java.lang.reflect.Method.invoke(Method.java:511)
06-13 17:51:26.042: E/AndroidRuntime(27358): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:790)
06-13 17:51:26.042: E/AndroidRuntime(27358): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:557)
06-13 17:51:26.042: E/AndroidRuntime(27358): at dalvik.system.NativeStart.main(Native Method)
我已经测试了我的应用程序samsung galaxy 2 7.0选项卡。
请告诉我，在我的代码中有什么问题？
提前致谢
答案 0 :(得分：1)
您只进行一次采样。这可能是你获得OOM的原因。
试试这个：
if (currHeight>targetHeight || currWidth>targetWidth)
{
if (currWidth>currHeight)
sampleSize = Math.round((float)currHeight/(float)targetHeight);
else
sampleSize = Math.round((float)currWidth/(float)targetWidth);
}
final float totalPixels = currWidth * currHeight;
// Anything more than 2x the requested pixels, sample down further
final float totalReqPixelsCap = targetWidth * targetHeight * 2;
while (totalPixels / (inSampleSize * inSampleSize) > totalReqPixelsCap) {
inSampleSize++;
}
答案 1 :(得分：0)
尝试：
public View getView(int position, View convertView, ViewGroup parent){
ImageView i = convertView;
Drawable toRecycle= i.getDrawable();
if (toRecycle != null) {
((BitmapDrawable)i.getDrawable()).getBitmap().recycle();
}
i.setImageURI(mUrls[position]);
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new Gallery.LayoutParams(260, 210));
return i;
}
另外，请尝试increasing your VM heap size以允许沙盒环境分配更多内存。